Clamp



FIG. 1 is a front and left side perspective view showing the design including a slide arm, slide rail and fixed arm;

FIG. 2 is a left side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a right side view thereof. 

The ornamental design for a clamp, as shown and described. 